Photosynthesis - general
Photosynthesis is performed by:
1. both heterotrophs and autotrophs
2. all living organisms.
3. autotrophs only.
4. only prokaryotic cells.
5. heterotrophs only.
3. autotrophs only.
Where in a eukaryotic plant cell is the enzyme ATP-synthase located?
1. in both the thylakoid membrane of the chloroplast and in the cristae (inner) membrane of the mitochondrion
2. in the nuclear membrane
3. only in the thylakoid membrane of the chloroplast
4. in the plasma membrane
5. only in the cristae (inner) membrane of the mitochondrion
1. in both the thylakoid membrane of the chloroplast and in the cristae (inner) membrane of the mitochondrion
Which of the following is NOT true of the Calvin Cycle?
1. CO2 is converted to glucose
2. NADP+ is a product
3. The process occurs in the stroma of the chloroplasts
4. The process uses ATP
5. oxygen gas is released
5. oxygen gas is released
Which statement about thylakoids in eukaryotic cells is NOT correct?:
1. Thylakoids are assembled into stacks.
2. The space surrounding the thylakoids is known as the stroma.
3. Thylakoids exist as a maze of folded membranes.
4. Thylakoids contain chlorophyll.
3. Thylakoids exist as a maze of folded membranes.
From where does a heterotroph directly obtain its energy?
1. the sun
2. eating other organisms
3. the sun and eating other organisms.
4. simple chemicals in the surrounding environment
2. eating other organisms
Which of the following processes includes the conversion of carbon dioxide to carbohydrates?
1. cellular respiration
2. the Calvin cycle
3. hydrolysis
4. the light reaction
5. fermentation
2. the Calvin cycle
Which of the following occurs during the light-dependent reaction of photosynthesis?
1. ATP is needed and broken down to ADP and P.
2. Chemiosmosis occurs in the mitochondria
3. oxygen is released, and NADPH is formed
4. Carbon gets reduced from CO2 in the process of making sugar
5. Oxygen and hydrogen ions combine to make H2O
3. oxygen is released, and NADPH is formed
During the Calvin cycle in most plants, carbon dioxide is bound to a five-carbon chain by a special enzyme called:
1. oxaoloacetic acid
2. rubisco
3. ATP synthase
4 phosphoenolpyruvate (PEP)
5. Glyceraldehyde 3 Phosphate (G3P)
2. rubisco
Which molecule absorbs the energy of a photon in photosynthesis?
1. ATP
2. water
3. glucose
4. chlorophyll
4. chlorophyll
The enzyme that catalyses the synthesis of ATP from ADP and P that is present in both photosynthesis and cellular respiration is:
1. NADPH
2. Rubisco
3. chlorophyll
4. ATP synthase
4. ATP synthase
Which one of the following is NOT required for photosynthesis to occur?
1. CO2
2. NADP+
3. ATP
4. O2
5. All of the choices are required.
4. O2
The light reaction of photosynthesis supplies the Calvin cycle with:
1. oxygen and carbon dioxide
2. Carbon dioxide and NADPH
3. Glucose(C6H12O6) and NADP
4. ATP and NADPH
5. NADP and water
4. ATP and NADPH
Which statement correctly describes carbon fixation?
1. the conversion of CO2 to an organic compound
2. the use of RuBisCO to form CO2
3. the use of ATP and NADPH to reduce CO2.
4. the production of carbohydrates from G3P
1. the conversion of CO2 to an organic compound
Plants produce oxygen when they photosynthesize. Where does the oxygen come from?
1. the electron transport chain
2. splitting water molecules
3. chlorophyll
4. ATP synthesis
2. splitting water molecules
The process that includes a build-up of protons against a concentration gradient that then provides a mechanism for ATP production, and that is present in both cellular respiration and photosynthesis is:
1. chemiosmosis
2. the light reaction
3. the dark reaction
4. the citric acid cycle
1. chemiosmosis
What is the energy of a photon first used to do in photosynthesis?
1. energize an electron
2. synthesize glucose
3. produce ATP
4. split a water molecule
1. energize an electron
During the noncyclic photophosphorylation (light reaction), all of the following are produced EXCEPT
1. NADPH
2. ATP
3. oxygen gas
4. carbon dioxide
5. all of these products are produced during this process
4. carbon dioxide
What is the molecule that leaves the Calvin cycle to be converted into glucose?
1. 3-PGA
2. G3P
3. RuBP
4. ADP
2. G3P
Which color(s) of light does chlorophyll a reflect?
1. red
2. blue
3. red and blue
4. green
4. green
The electron transport chain in photosynthesis is different than the electron transport chain in cellular respiration in several ways, but MAINLY because:
1. it uses oxygen to get it started.
2. there is no difference between the two.
3. it uses a photon of light to get it started.
4. it occurs in the stroma of the chloroplast
3. it uses a photon of light to get it started.
In photosynthesis in eukaryotic cells, the light reaction takes place in the ___________ and the Calvin cycle takes place in the ______________.
1. thylakoid membrane, stroma
2. thylakoid, mitochondria
3. mitochondria, chloroplast
4. stroma, thylakoid membrane
1. thylakoid membrane, stroma
In photosynthesis, Photosystem II comes before Photosystem I because:
1. Photosystem I was discovered first even though it is the 2nd photosystem in the chain of events.
2. Photosystem I actually comes first.
3. Photosystem II needs 2 photons to start the reaction, and Photosystem I only needs 1 photon.
4. it is meant to confuse biology students
1. Photosystem I was discovered first even though it is the 2nd photosystem in the chain of events.
How many turns of the Calvin cycle is needed to produce 1 glucose molecule?
1
12
18
6
6
Which color(s) of light does chlorophyll a absorb?
1. blue
2. green
3. red
4. red and blue
4. red and blue
What are the three stages of the Calvin cycle, in the order that CO2 enters the cycle?
1. electron excitation, ATP production, NADPH production
2. regeneration, oxidation, fixation
3. fixation, reduction, and regeneration
4. fixation, regeneration, degeneration
3. fixation, reduction, and regeneration